Vaal Haste:
Pop this together with Flesh Offering when you have 50+ Minions, they will get insane movement and attack speed and will clear everything really fast FOR 15 SECONDS!!!

We don't use Vaal Lightning Strike often, so it doesn't really matter if you have another vaal skill or not. Start of the map is a bit slower, but in return bosses and tough rares will melt down. I have vaal haste up 90% of the map!

Jewels

Life > Minion Damage > Weapon Physical Damage > Weapon Attack Speed

Flasks

Support Synergy

This build is just EPIC with someone supporting you with auras and curses!